Composition of chicken caecal microbiota as a function of chicken age.

<p>Panel A, UPGMA clustering with Mahalanobis distance performed on PCoA data. Panel B, experimental animal house short-term experiment, panel C, long-term on-farm experiment. Green colour, families within <i>Firmicutes</i>, violet colour, families within <i>Bacteroidetes</i>, blue colour, families within <i>Proteobacteria</i>. 1 - <i>Bifidobacteriaceae</i>, 2 - <i>Bacteroidaceae</i> 3 - <i>Porphyromonadaceae</i>, 4 - <i>Prevotellaceae</i>, 5 - <i>Rikenellaceae</i>, 6 – unclassified <i>Bacteroidales</i>, 7 - <i>Deferribacteraceae</i>, 8 - <i>Clostridiaceae</i> 1, 9 – <i>Clostridiales</i> Incertae Sedis XII, 10 - Eubacteriaceae, 11 - <i>Lachnospiraceae</i>, 12 - <i>Peptostreptococcaceae</i>, 13 - <i>Ruminococcaceae</i>, 14 – unclassified <i>Clostridiales</i>, 15 - <i>Veillonellaceae</i>, 16 - <i>Lactobacillaceae</i>, 17 - <i>Acidaminococcaceae</i>, 18 - <i>Fusobacteriaceae</i>, 19 - <i>Desulfovibrionaceae</i>, 20 - <i>Enterobacteriaceae</i>, 21 - <i>Synergistaceae</i>.